Q: Is 259,640 a Prime Number?
A: No, 259,640 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 259640 can be evenly divided by 1 2 4 5 8 10 20 40 6,491 12,982 25,964 32,455 51,928 64,910 129,820 and 259,640, with no remainder.
Since 259,640 cannot be divided by just 1 and 259,640, it is not a prime number.